Question $4$

$(4$a$)$ Calculate the temperature profile for each stream of the HEN shown below

$FC$

$\frac{1}{}$

$"$

$Fe$

$(4$b$)$ For the grid diagram shown below:

$($i$)$ Write the tags for the culprit heat exchangers and paraphrase the golden rule that is violated by the exchangers

$($ii$)$ Calculate the utilitu renu irement of stream $C-3$